The Women's Arc'teryx Thorium AR Hoodie is a durable and versatile down insulated hoodie that functions as a warm mid layer or standalone piece. Its athletic length and 100% nylon ColibriTM fabric makes it the complete package for long days of hiking and mountain activities in cold and extreme weather conditions. With a high fill weight of European goose down CoreloftTM insulation, this hoodie is super warm for the days where the temperature drops lower than ever.